This isn't rocket science.... no staged video needed, in the REAL word a good wrestler/grappler who can strike or submit will take out a boxer, just pick the right time to shoot or you will be knocked out.

Not in cage in real fights its easy to block a jab whit a elbow strike you dont need to hit frontal on the fist you can hit it directly on the arm i dont now what kind of wing chun you learn in the us but in germany its the focused material arts for special forces and police